REDOX TITRATIONS

Redox Reactions

Reactions that involve transfer of electrons

Redox Reactions

A reaction which occurs between a reducing and

oxidizing agent

ON

The _of a simple ion is equal to its ionic charge

ionic charge

The ON of a simple ion is equal to its_

+1

The ON of hydrogen is always _ ,except in metal

hydrides like NaH where it is –1

–1

The ON of hydrogen is always +1, except in metal

hydrides like NaH where it is _

–2

The ON of oxygen is always _ except in peroxides like

X2O2 where it is –1

–1

The ON of oxygen is always –2 except in peroxides like

X2O2 where it is_

zero

The ON of an uncombined element is always _

zero

For any neutral(zero charge) compound, the sum of

the ON’s is always _

complex ion

For a complex ion, the sum of the ON’s equals the

charge of the_

+1

Na +

+2

Cu 2+

-3

N3-

+1

HCl

-1

NaH

-2

H2O

-1

H2O2

0

Na

0

Cu

0

N2

+4-2

CO2

+7 -2

MnO41-

0

H₂

+6

SO3

+6

SO42-

+1

K+

-3

NH3

+7

MnO4-

+6

Cr2O72-

-2

CH3OH

+5

PO43-

+5

ClO3-

+4

HSO3-

0

Cu

oxidation

an increase in oxidation number of an

atom signifies _

oxidation

+2 to +4

reduction

a decrease in oxidation number of an

atom signifies _

reduction

0 to -1

Oxidation and reduction

_ 2 always occur

together in a chemical reaction.

redox

Oxidation and reduction always occur

together in a chemical reaction. For this

reason, these reactions are called “_”

reactions.

oxidation state

Although there are different ways of

identifying a redox reaction, the best is to

look for a change in_: